1. Downhill forming methodDownslope shaping of welded pipe equipment can significantly reduce edge extension.2. Increase the intermediate extension of the billetDuring the forming process, the reduction of the hole pattern is increased, so that the gap between the upper and lower rolls is slightly s

After completing the purchase, the general buyer inspects and cleans the pipeline. The purpose of destruction is:1. Check the quality of pipeline products2. Clean the inside of the pipe3. Clear all events in the pipeline to react with the passing materialThe important part of pipeline cleaning, what

Integrated analysis of the characteristics and causes of common quality defects in steel...